Tethering icon disappeared from quick settings panel

Hi, somehow today I looked & it's not there anymore.
If I click Edit & look for it in the rest of the inactive icons it's not there either - I mean it's not even there for adding.
I usrd to have it & use it every once in a while, what happened?

Its has been several threads about this problem and few toggles are mising for me too.
Samsung support said, its 2 apps that are casuing it. 1 is Samsungs TTS update and either I dont know. Either factory reset, it will bring back all the toggles and disable Galaxy Apps updates. Or wait for Samsung to fix the bug with new OTA update.
I choose to wait, dont want to go through all the setup again.